Bound States Due to Resonance Scattering in Superconductor
- 1 June 1972
- journal article
- Published by Oxford University Press (OUP) in Progress of Theoretical Physics
- Vol. 47 (6) , 1817-1823
- https://doi.org/10.1143/ptp.47.1817
Abstract
It is shown exactly that the bound state in the energy gap of superconductors is produced by the resonance scattering due to a single non-magnetic impurity. In an appropriate renormalization procedure, we can show the growth of an impurity band in the case of impurities of finite concentration and a possibility for gapless superconductivity is indicated.Keywords
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